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Vulnerability details: VCID-6kcx-vptm-zbds
Vulnerability ID VCID-6kcx-vptm-zbds
Aliases CVE-2023-42794
GHSA-jm7m-8jh6-29hp
Summary Incomplete Cleanup vulnerability in Apache Tomcat. The internal fork of Commons FileUpload packaged with Apache Tomcat 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 included an unreleased, in progress refactoring that exposed a potential denial of service on Windows if a web application opened a stream for an uploaded file but failed to close the stream. The file would never be deleted from disk creating the possibility of an eventual denial of service due to the disk being full. Other, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-459 Incomplete Cleanup
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-42794.json
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
epss 0.00355 https://api.first.org/data/v1/epss?cve=CVE-2023-42794
apache_tomcat Low https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42794
cvssv3.1 5.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-jm7m-8jh6-29hp
cvssv3.1 5.9 https://github.com/apache/tomcat
generic_textual MODERATE https://github.com/apache/tomcat
cvssv3.1 5.9 https://lists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82
generic_textual MODERATE https://lists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82
cvssv3.1 5.9 https://nvd.nist.gov/vuln/detail/CVE-2023-42794
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2023-42794
cvssv3.1 5.9 http://www.openwall.com/lists/oss-security/2023/10/10/8
generic_textual MODERATE http://www.openwall.com/lists/oss-security/2023/10/10/8
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-42794.json
https://api.first.org/data/v1/epss?cve=CVE-2023-42794
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/apache/tomcat
https://github.com/apache/tomcat/commit/43b882b8a577684498ab9b8851aa0427216784f7
https://github.com/apache/tomcat/commit/c99ffc30e95ddc4daede564d08cb5ea2b9a9da65
https://lists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82
http://www.openwall.com/lists/oss-security/2023/10/10/8
2243751 https://bugzilla.redhat.com/show_bug.cgi?id=2243751
CVE-2023-42794 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42794
CVE-2023-42794 https://nvd.nist.gov/vuln/detail/CVE-2023-42794
GHSA-jm7m-8jh6-29hp https://github.com/advisories/GHSA-jm7m-8jh6-29hp
RHSA-2023:7623 https://access.redhat.com/errata/RHSA-2023:7623
RHSA-2024:0125 https://access.redhat.com/errata/RHSA-2024:0125
RHSA-2024:0474 https://access.redhat.com/errata/RHSA-2024:0474
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-42794.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/apache/tomcat
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.apache.org/thread/vvbr2ms7lockj1hlhz5q3wmxb2mwcw82
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-42794
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2023/10/10/8
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.57824
EPSS Score 0.00355
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:38:07.684605+00:00 Apache Tomcat Importer Import https://tomcat.apache.org/security-9.html 38.0.0